In early 1967, Denny Hwang and David Lee were selected to become the next batch of U-2 pilots. I will use their case to illustrate the process each nominee must go through before being qualified as a U-2 pilot. 黃七賢和李伯偉在1967年獲選為下一批接受U-2訓練的飛行員，有關他們訓練過程的文件恰好大半都已解密，正好可以讓我們了解這些飛行員從遴選到成為正式U-2飛行員的歷程。